"I am totally writing cheesy songs. Maybe he'll p*** me off and I'll write a record about that," she said.

Kelly - who is celebrating her one-year anniversary with her fiance, who popped the question in December - admitted she never thought she would find true love.

"I couldn't even find someone to go on a date with that I enjoyed their company. Like, it was just rough," she continued.

"You don't see it coming. And it sounds cheesy and it sounds like a movie, but it is that though. One day you'll meet them and everything will change."

She added: "I always made fun of those people that were like, 'Oh, I met the one. He's amazing,' and I'm like, 'Oh my god, go write a song.' He's like my best friend, and he's someone I want to hang out with all the time."

Kelly, who is up for two Grammys with her No 1 hit, Stronger (What Doesn't Kill You) nominated for record of the year and best pop solo performance, has been busy planning her wedding.

"I don't understand why we aren't eloping," she said.

"It's a lot of details and I'm not that girl. I've never been that girl that's like, 'Oh my god, my wedding dress. Blah, blah, blah.'"